syzbot has bisected this issue to:
commit d70c47c8dc6902db19555b7ff7e6eeb264d4ac06
Author: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Date: Thu Apr 23 19:34:33 2020 +0000
net: phy: make phy_suspend a no-op if PHY is suspended already
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16b2aad8900000
start commit: 0bddd227 Documentation: update for gcc 4.9 requirement
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=15b2aad8900000
console output: https://syzkaller.appspot.com/x/log.txt?x=11b2aad8900000
kernel config: https://syzkaller.appspot.com/x/.config?x=66ad203c2bb6d8b
dashboard link: https://syzkaller.appspot.com/bug?extid=20b90969babe05609947
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12a8edff100000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=167d3bb7100000
Reported-by: syzbot+20b90969babe05609947@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: d70c47c8dc69 ("net: phy: make phy_suspend a no-op if PHY is suspended already")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
